Oh, foot doctor?!

[sj]

I wouldn't know much about during the game but maybe try putting the shoes and the insoles in front of a table top fan when you get home. That way at least they would be dry at the beginning of your games.

[Jimgolf]

There are socks that keep your feet dry, I think the fabric name is Dryweave. There are deodorant absorbing inserts that can be purchased in a sporting goods store that also help relieve the odor between wearings. Other tips: change socks after every game, or even after every half, don't wear patent leather (a fancy name for plastic), keep a spare pair of deodorant insoles and change between games.

Also make sure you don't have a fungus infection.